Comparison

Wattson vs Thermal Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Wattson

Features
Read full description

Stop guessing. Stop scrolling through ads. Stop paying monthly for a calculator. Wattson is two tools in one app: 15 precision electrical calculators with an AI assistant that actually runs them, and a project manager for your jobs — clients, photos, materials, estimates and payments. Built for electricians and engineers who work in the field, not the ones designing the app store. AI ASSISTANT — ANSWERS YOU CAN TRUST Other apps wrap a chatbot and call it AI. Wattson's AI runs your actual calculators — cable sizing with full derating, voltage drop, breaker coordination — and returns verified results citing the exact IEC or NEC code section. Not opinions. Math. Use voice input when your hands are full. Speak your question, get a verified answer — hands-free on the job site. PROJECT MANAGEMENT — EVERY JOB IN ONE PLACE • Clients — name, phone and address; tap to call or open in maps • Job status — active, completed or archived; search all your projects • Photos — before, after and progress shots; draw on photos to mark up the work • Notes — typed or by voice • Materials — quick-add common electrical parts, quantities and prices; export the list as PDF • Estimates — materials plus labor hours and rate; export a PDF to send to your client • Payments — cash, bank transfer or card; see quoted, paid, remaining and profit per job • Documents — keep files with the job • Sign in to back up your projects and sync them across devices SMART CABLE SIZING Full derating factor analysis (Ca, Cg, Ci) per IEC 60364 — installation method, conductor material, insulation type, ambient temperature, and grouped circuits. PRO CALCULATORS • Smart Cable Sizing — full derating factors • Voltage Drop — single-phase and 3-phase • Breaker Sizing — Ib ≤ In ≤ Iz protection coordination • Motor Calculator — FLC, starting current, protection • Short Circuit (Ik) — IEC 60909 fault current • Earth Fault Loop (Zs) — loop impedance testing • Power Calculator — P, Q, S, cos φ • Power Factor Correction — capacitor bank sizing • Wire Sizing — AWG and mm² with capacity tables • Conduit Fill — IEC fill limits • Box Fill — NEC 314.16 volume calculations • Dwelling Load — NEC Article 220 residential loads FREE — NO CATCH • Ohm's Law — V, I, R, P solver • Unit Converter — AWG, kW, HP, °C • LED Color Temperature • Wiring Color Codes — IEC 60446 standards • IP Rating Decoder — IEC 60529 • Installation Heights • Wiring Diagrams — 12 interactive circuit diagrams • Full AI assistant with voice input WIRING DIAGRAMS 12 professional interactive circuit diagrams — 6 for IEC and 6 for NEC. Color-coded wires per IEC 60446 and NFPA 70, component labels, installation notes, and regulatory references. Pinch to zoom, tap to explore. DUAL STANDARD SUPPORT Switch between IEC 60364 and NEC/NFPA 70 with one tap. Every calculation cites the applicable code section. Whether you wire to European or American standards — one app covers both. PDF REPORTS Export PDF reports for cable sizing, box fill, dwelling load, materials lists and estimates. Hand them to inspectors, clients, or keep them for your records. 8 LANGUAGES English, German, French, Spanish, Italian, Polish, Portuguese, and Croatian. The AI responds in your chosen language. NO ADS. NO SUBSCRIPTIONS. NO $10/MONTH "AI TAX." Download free with the free tools above, the full AI assistant and wiring diagrams. Unlock all Pro calculators and project management with a single purchase. No recurring fees. No ads. No paywalled NEC editions. Ever. WHY ELECTRICIANS SWITCH TO WATTSON → AI that runs real calculations, not a chatbot wrapper → Calculators and job management in one app → Estimates and payment tracking for every job → Voice input — hands-free on the job site → Full derating factors other apps skip entirely → IEC and NEC in one app — not two separate purchases → PDF reports for inspectors, clients and documentation → No ads, no subscription → 8 languages and dark mode Wattson. The electrical toolbox professionals trust.

About

Thermal Viewer

Analyze radiometric thermal images directly on your iPhone, iPad, or Mac. This app supports various thermal camera file formats and allows for detailed temperature analysis, including spot measurements, color palettes, and live re-analysis. Export data and images for professional use, all while keeping your data private and offline.

Highlights
  • Radiometric thermal image analysis
  • Temperature measurement (spot, box, ellipse, line)
  • Multiple color palettes
  • Live re-analysis with adjustable parameters
  • Visible-light blend and MSX-style overlay
  • Export temperature matrix to CSV
  • Batch export of images and settings
Features
Read full description

Thermal Viewer opens and analyzes radiometric thermal images right on your iPhone, iPad, and Mac. No Windows PC, no camera accessory, and no account. Searching for "FLIR Tools for Mac" or a SmartView alternative? This is the native app you have been missing. FLIR discontinued its Mac software and Fluke's mobile viewer is no longer maintained. Thermal Viewer fills that gap, fully offline. WORKS WITH • FLIR radiometric JPEG: E-series, T-series, Cx, FLIR ONE, CAT phones • Fluke IS2 files • Radiometric TIFF (ResearchIR, Vue / Duo Pro R) • InfiRay / P2 Pro thermal JPEG • DJI thermal JPEG (image and capture parameters) • Plain thermal JPEGs EVERY PIXEL IS A TEMPERATURE Tap anywhere to read the exact temperature. Add spot, box, ellipse and line measurements with min / avg / max, and Delta-T between any two of them. PROFESSIONAL ANALYSIS • 8 color palettes plus your camera's own palette • Level/span with histogram, isotherms, automatic hot and cold markers • Live re-analysis: change emissivity, reflected temperature and distance, and temperatures recompute instantly • Visible-light blend, picture-in-picture, and MSX-style edge overlay • °C / °F / K • Full camera, lens, GPS and parameter inspector EXPORT & BATCH • Export the full temperature matrix to CSV • Export rendered images (PNG) and reproducible analysis settings (JSON) • Hotspot Triage: scan a whole folder and flag every image above your threshold • Batch export PRIVATE BY DESIGN Everything runs on your device. Your images never leave your phone: no cloud, no account, no tracking. Thermal Viewer is an independent app and is not affiliated with, endorsed by, or sponsored by FLIR, Teledyne, Fluke, DJI, or InfiRay. Brand names are used only to indicate supported file formats. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms

Screenshots

Wattson4 screens
Thermal Viewer4 screens

Verdict

The call

The clearest difference is device support: Thermal Viewer at 4 against Wattson's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Wattson sells 1 one-off in-app purchase and Thermal Viewer sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

Scorecard1 real difference · 9 level
Wattson versus Thermal Viewer: the parameters behind the verdict, then further details
ParameterWattsonThermal Viewer
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad, iPod, Mac — better
Requires iOS16.015.0 — better
Further details — not scored
Size44 MB35 MB
Age rating17+4+
DeveloperMarin MartinovicRush Tools LLC

In-app purchases

1 purchases

Wattson

One-time1
  • Wattson Pro$5.99
3 purchases

Thermal Viewer

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • Pro Yearly$29.991 Year
One-time1
  • Lifetime Access$49.99

Questions

Is Wattson free?
Wattson is free to download, with in-app purchases available.
Is Thermal Viewer free?
Thermal Viewer is free to download, with in-app purchases available.
Do Wattson or Thermal Viewer have ads?
Neither Wattson nor Thermal Viewer shows ads.
Which is updated more often, Wattson or Thermal Viewer?
Wattson ships an update every 5 days, and Thermal Viewer every 5 days. Most recently, Wattson was updated on October 31, 2026 and Thermal Viewer on November 1, 2026.

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